Windshield-cleaner-operating mechanism



J. L. NILSON ETAL WINDSHIELD CLEANER OPERATING IIBGMISI Nov. 18, 1930.

Filed Aug. 25, 1923 2 ShetSE-Sheet 1 jzaezzZZ Patented Nov. '18; 1930 nni JOHN Lnntson Ann Join: F. memos, F oiiieleeo, ILLINOIS innsiiinLnoLneniin-ornenwine -'ivincii'Anisni Application filed Au ust as, 1922;. serial mfese z le;

e'trans yarent windshield for an automobile,

with a driving force generated by said automobile or other power-driven vehicle. The

general objects 'ofour presentimprovement are to further simplify construction, add service functions to simple parts, obviate the liabilityof disarrangenients and temporary stoppa 'es much as possible, and, in short, to provide increased efficiency with a lowering oi costs. And with the abovenained general objects in View our inventioneonsists in the novel construction, combination and arrangement of :parts all as h ereinaftei described in detail, illnstla-ted in theacconipanying; drawing and more particnlarly poi nted out. in the appended claims; 1

In the drawing j Figure 1 is a longitudinalexterior view of a wiper operating, mechanism with the cover for the valve chainberrenioved to expose the valve and. its ports, the wiper or squeegee being partly oroken away, 1 c

Figure 2 is an enlarged view ot-a broken away portion of the motor or engine cylinl a section through the hearings and oer, velve block taken through the middle portion of which is stepped backto disclose in full lines the air-suction passages leadingtothe :tive endsot thecylinder.

, 3 is a section *telzensubstantially m ,the line 3-3 of Figure 2.

Thy-sure 4 is a longitndnaland side view of a slightly modified form of the reciprocatory date in aiposition opposite-to that in which it is show vby dotted lines in Fi i n ure Q is a detail sectional 'iewq-taken on line -l3 4 Figure 4, with p'arts omitted. -ll i 5 an enlarged TGZI-IflSldQ -VlGKV of the i y ;velve,-tlie on-ter ides-{which 1s shownin li ignre 1. I

c re 6 aof the rear end of he airings end valvehleck which is projected into the cylinder an intermediate gporti onhroleenaway and n ect to disclose in illll lineswhat is shown b; dot-ted lines in r'Figurey, he

o g mechanism which sliiftsthe v8 engagingthe nn'de'r-side-ofthe lower rec- 3 as in Figure 3', with after the end each piston stroke and-in a substant ally silent manner; Figure '7 includes longitudinal and edge views of ti 1e levei opevated hexagon with ournal 'entls, one of which'is slotted to looselyv engage n flat valve tongue, an edge View.

of the? valve, the spring which holds the valve closely against its and an edge view off-the closure-cap removed from Figure 1. end which serves to hoii' said spring slightly tensionedfagainstthe valve, all separated, and arranged in a position substantially at right 1 angles to the operative position of the valve in the other views to morecle'arly show the 'jaw opening 77and its relation to the 6 tongue 76.

In the several views 2 represents a cylinder whichinayhe made as a section of netal tubing. -T he ends of this'cylinder a e closed by 'he'ads or -caps-3 and 'whichiinay be an tached liemovably oi" otherwise iii-any suitable/or ordinary-capping manner; Inits middle portion the cylinder 2 is :provided with -a rectanguler side opening toreceive the lower rectangular portion of the bearing block shownseparately in Figure 6, Said side opening is made by making parallel vertical cntsthron'gh the sideot said cylinder and at least one horizontal out between said vertical cuts. Betweei'i the latter the body of the cylinder-is bent out to form a pair of peral'lel hracke lcdgesglips or fixed jaws Tand 8, =the former the upper portion of the bearing {block and the jaw 5 tangnlar'porti'on v5 of said bearing block, asshown inFigures 1, 2 and 3. The bearing block is secured against sliding movement ably en 'eged by oscillating cleaner-arm shaft 19 to be oscillated by the inclined slots shown in Figure 4 and shown by dottedlines in Figure 1. On the outer end of the shaft 19 and at right angles thereto is mounted a squeegee or cleaner arm 20 for a squeegee or wiper 21, the details of which are not specifically involved in the presentimprovement.

he arm or rod 20 is" held at itsupper end in a bore 22 which passes transversely through the shaft 19. Said arm is held against 1on gitudinal movement in said bore by a setscrew 23 shown in Figures 1 and 3. j

On the inner end of the shaft 19, which projects into the interior of the cylinder 2 as shown in Figure 3, is keyed or secured a flat plate 24 the area of which is indicated by dotted lines in Figures 1 and 4, where said plate is also shown iii-two opposite positi'ons,or at the respective ends of the piston:

strokes. The plate 24 is a double lever or vention, and may be varied in numerous ways to attach the pistons34 and 35 to the plate 31.

In Figure 4 is added bores 39 and 40 through the plate 31 adjacent tothe pistons.

' These bores, or other suitable openings for like purpose, are to receive hook-ends 42 and 43 of a flexible strip or spring 41 having each of its ends bent twice at right angles to form saidhooks,.or lugs, 42 and 43 and at the same time space the strip 41 away from the side of the plate 31 to make room for a felt strip 44 or other absorbent material adapted to be soaked with oil to lubricate ad acent parts. The body of the strip 41 is adjacent one side of the plate 31 and its bent out hook or lug portions42 and 43engage the opposite side ofthe plate as indicated by dotted lines in Figure 4, where the oil-carrying strip is omitted while a cross sectionfof it is shown in Figures 3 and 4 'In Figure 3 the plates 24 and 31 are, for the sake of clearly separating their identities, shown slightly spaced apart, although the plate 24-serves to support the plate 31 against tilting movements. Additional or other supports against such movements are shown providedin a pair 1 of rearwardly projecting fingers 44 and 45 and a lower similarly projecting flange 46,

i the latter being cut away at 48 to receive Through saidcap is a small air-hole 48 which places the valve chamber in communication with the outer air, which communication may also be through a bore 49 which passes entirely through the bearing block from the chamber 46 to the interior of the cylinder 2 which is open to the atmosphere through a slot 50 inthe bottom of said cylinder. The length of this slot is substantially that of the reciprocating movements of the pistons and is provided to pass a stud or pin 51 from the interior to the exterior of the cylinder and to permit manual movement of the pistons through said stud. Said stud, or finger-piece,

is secured to and projects from a laterally bent out lug portion 52 of the plate 31 and has a threaded outer or lower end provided with a knurled nut 53 which, to prevent accidental movement, through jarring, of the pistons and squeegee, may be tightened a ainst the cylinder. In its normally free condition as in the several views it moves in an exposed position with the pistons and may be operated to free the latter or the valve movement from any temporary clogging during the automatic operation of the squeegee. A fiber washer 54 is preferably placed on the stem 51 between the nut and the cylinder to increase the frictional engagement and portion of the engine where itsoperation produces a partial vacuum. The bore through the hollow nipple 56, as shown in Fig. 2, leads to a contracted upper end of a threaded bore 56 that-is engaged by a threaded valve-stem 57 carrying a knurled head 58, between which and the ledge 8 is interposed a lightly compressed coiled spring 59 to prevent accidental or jarring movement of the valve-stem. The

upper end of the latter is pointed in a needle valve portion 60 as shown most clearly in Fig.

2. This needle valve controls a port 61 that communicates with a bore 62. The latter is intersected by and communicates with a valve port 63 leading to a rotary valve 64. The latter is in the form of a circular disk with a segmental cut away portion 65 which provides a space that is always open to the atmosphere or the free air port 49 so that when one end of the cylinder is connected with the suction port the other end of the cylinder will be open to atmosphere. In the inner face of the valve, shown separately in Fig. 5, is an extended curved groove, depression or trough 66. The respective ends of this groove or valve port are placed in communication first and then with the other iend,:through ports 67 and 68, which communicatewith the pasthrough tubes 69 and 70. The latter have their opposite ends placed in communication with the interior of the cylinder 2' through hollow pipe couplings 71 and 72' mounted on the-endsor caps 3 and 4, as shown in Figure 1, or in the manner usual with the devices of this kind. I

I The valve 64 is provided with a boss or hub 73 which is rotatably fitted into a counterbore 74 inthe botiom of the valve chamber 46'.- lnthe outer face 05 the valve 64 is a somewhat similar bore 7 5 in whichis seated the inner end ofa light coiled spring 76 (Figs. 3 and 7) compressed between the valx 'e-chamber cap 47'and the valve 64. From the hub 73 oi the valve 64 projects a tongue 76 having a lostmoion engagement with a slot 77 in an outer journal end 78 of ahex- 'agon part 7 9 having an inner journal end 80 that is journaled ina dish or washer 81 (Fig. 3) closing the rear end oi a bore 79 (Figs.

and 6) in which the hexagon is rotatable. The bore 79 .in which the hexagon 79 rotates is intersected by a bore 82 the sides of which. are alined with the hexagon 79. Against opposite parallel sides of thehexagon 79 and in said here "are placedballs 83 and 84 which are yieldingly pressed toward each other and against said hexa-g'on'byz coiled springs 85 and86 which are held in placeby threaded or screw plugs 87 and88 which normallyclose the threadedouter ends of the bore '82. From the inner journal end 80 of the hexagon projects a contact pin, arm or lever 89 through which the hexagon is rotated back and forth, or rocked by laterally bent out lugs 90 and 91 on the member 31 (Figs. '3 and 4) which swing the lever suf-- liciently to place two opposite apexes of the hexagon slightly past dead center and thereby cause the balls 83 and 84 under the pressure of the springs to rotate the hexagon and herewith the valve 64 through the tongue 76' being engaged by the sides oi the slot 77. The relation of the slot 77 and the valvetongne 76 is such that the slot 77 shallrotate, while the hexagon is rotated from 1ts position in, say, Fig.6, to place opposite angles of the hexagon in horizontal alinement,

without moving the tongue 6 until such alinement is reached. Thereafterithe balls will move the valve suiiiciently to uncover one and cover the other of the ports con1- mnnicating with the valve-port 66, wvhich takes place, thereby relieving the piston movement of the duty of moving the valves.

During that port-ion of themovement-s when the lugs-90 and 91 engage the hexagonslever 1 89 the squeegee-actuating movement ofthe plate 31 and its. slots 27 and 28, is at rest by providing horizontalextensions 92 and 93 for the lower ends of the slots 27' and 28, through :3. n 7 semicircular revolution of the shaft 19 and which" slot extensions the respective studs .25 and 26'pass while the lever 89 is being swung.

Theoperation of our present improvementare shown by dotte'dlines in Fig; 1, to move to the left. The wrist-pin, or crank-p111, or stud, 26 being in the lower endof the slot 27 (F igs 1 and 4) and the pin 25 resting on the incline 29, the movement to the left of. the pistoi'i connecting plate 31. will cause the pin 25 to be engaged with the oppositely in-: clined slot28, the top edge of the latter striking the: upper side of the pin with the result thatwhen the pin 26 has risen out of theislot 27 the position of the crank-plate 24 will be reversed or changed from its dotted line position in Fig. 1 to its dotted line position in 4, thereby. effecting approximately swinging the squeegee to the same extent. By the time the pin 25'has reached the lower end of the slot 28 as in Fig. 4, the lug 91 will have come into contact with the hexagons lever 89 and swung it'suiiiciently to cause the balls 88 and 84 to mount and slightly pass the deadcenter of opposite angle apexesof the hexagon. At this point the pistonsw-ill '1:

have reached the end of theirv movement and the pin 25 will be at the right hand end of thehorizontal extension 93 of the inclined slot 28 in the Figure 4 position, or in the lefthand end of the'slot 27 in theFigure 1 dotted line position. The balls 83 and 84 having mounted horizontally alined .a-pexes oi the; hexagon angles and on parallel inclined sides of the hexagon, the spring-pressure on said balls will rotate the hexagon, which at that moment will have opposite sidesof the slot 7 7 engaged with the tongue The horizontal extensions 92 and 93 of the inclined slots 27 and 28 operate to move the valve while the lever 89. is swung and relieve the suction forcetrom carrying the load of the squeegee while the piston movement is shifting the valve as the projections [on the crank members 24 enter the'extens-ionijnst before the piston member reaches the limit of its movement in either direction and thereby maintains the crank shaft against oscillation duringthe timethat the cranks are operating in the portions 92 and 93 of the slots 64.

By grasping the thumb-nut 53 the pistons may be moved by'hand and by slightly turning said nut to tighten it against the cylinder 2, the parts shown separately in Fig. land the squeegee shown'in Figures 1 and 3 may be held against accidental movements or positions which would annoy the operator of a car or come into line with his vision ahead. Having thus described our invention, we claim as new and desire to secure by'Letters Patent- 1. The combination with a cylinder or casing for a wind shield cleaneroperating mechk anism, of a reciprocatorymember within the casing, a valve responsive in its operation to the movement of said member,said member having oppositely inclined slide contact tracks or surfaces, an oscillatory shaft, a crank on said shaft having parts connected therewith to be engaged by said tracks or surfaces, whereby the shaft will be oscillated when said member is reciprocated, means for imparting reciprocating movement to the said member, and means for maintaining said shaft at rest during a predetermined time in and at a predetermined point of the reciprocation of said member to permit move ment of the valve independently of the shaft.

2'. In a wind shield cleaner operating mechanism the combination of a casing, of an oscillatoryshaft carrying a cleaner memher, a crank rocked to and fro by saidshaft, a reciprocatory member, a valve responsive in its movement to the movement of said member, said member having slide. surfaces thereon which impart rocking. movements to said crank when the said member is moved, means for reciprocating said member, and means operating to maintain the shaft at rest and for causing the said member to move for a short distance independently-of the shaft and at the limit of movement of said member in both directions to permit movev ment of the valve independently of the shaft.

tions substantially parallel with the longi tudinal axis of said-plate and adapted to re-- ceive the crank members, the said extended portions ofthe slot also serving to hold the crank against oscillation to permit operation of the valve independently of the crank, and means for reciprocating said plate. 7

4. Actuating mechanism for a wind shield cleaner which embodies a piston and cylinder, means connected with the piston and extending through the wall of the cylinder and adapted to move said pistons manually,

and means whereby the-last said means will operate to secure said pistons against movement relative to said cylinder.

5. Actuating mechanism for a wind shield cleaner which embodies a piston and cylin der, said cylinder having an elongated slot through the wall thereof, and a member e terior of the cylinder extending through said slot and connected with the piston whereby said piston may be recipro *ated, and means with which said member co-operates for clamping the piston against movement relative to the cylinder and in any position of the piston with respect to the cylinder.

6. The combination of a cylinder or casing, a wind shield cleaner operating mechanism reciprocable therein, said mechanism embodying an elongated actuating member, an ,oscillatable shaft actuated by the reciprocation of said member, means for reciprocating the member, apertures in said member spaced from each other for a considerable distance in, directions lengthwise of said member, a resilient element extending lengthwise of said member, the ends of said element detachably engagin in the respective said apertures, and an a sorbent lubricant material disposed between said member and said element and maintained in place by said element.

7. The combination of a cylinder or casing, a wind shield cleaner operating 1nechanism reciprocable therein, said mechanism embodying an elongated actuating member, an oscillatable shaft actuated by the reciprocation of said member, means for reciprocating the member, apertures in said member spaced from each other for a considerable distance, a resilient element, the ends of said element being hook shaped and seated in the respective said apertures, said ends of the element maintaining the body thereof spaced laterally from said member, and a lubricant holding pad being disposed andmaintained betweensaid member and element.

8. In awindshield cleaner operating mechanism the combinaton of a casing, of an oscillatory shaft adapted to oscillate a cleaner member, a crank connected with the shaft, a reciprocating member in the casing and having oppositely inclined slots arranged end to end and which engage said crank members, a lubricant holding pad secured to the lateral face of said member adjacent and 6X- tending over a portion of said slots for lubricating the interengaging portions of said slots and said crank member, and means for reciprocating said member.

llli

9. In a windshield cleaner operating mechanism the combination of a easing of a reciprocatory member therein, a handle connected with said member and extending through the casing for manually moving said member, means whereby said handle will cooperate with the casing wall for locking said member against accidental movement relative to said casing, and means in addition to said handle for reciprocating said member.

In testimony whereof we have hereunto signed our names.

' JOHN L. NILSON.

JOHN F. PRINCE. 

